*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970006006
1970000000
1971000000
1972000000
1973000000
1974001001
1975010001
1976001001
1977015006
1978002002
1979045009
1980015006
1981013004
1982003003
1983003003
1984001001
1985012003
1986101002
1987126009
1988042006
198911080019
199031380024
19910890017
19924760017
1993111140026
1994232110045
1995210140026
199622490035
1997052210073
1998144170163
1999043120055
2000242160060
2001346120061
2002076210097
2003139190059
2004056150071
2005225140041
20062784000120
2007153330087
2008132310064
20095425300100
2010141550097
2011239470088
20124685700129
201311678100249
2014516510100271
20151124317000424
2016623125403494
2017830527800591
2018834427500627
20191232825100591
20200730010
2021070007
2022000000
Total9327032001044801